# Why do we find figure of merit of a galvanometer?

## Why do we find figure of merit of a galvanometer?

When current passes through the coil of the galvanometer, a deflection is observed. Use this information to find the definition of figure of merit of Galvanometer. Note: Galvanometer has a moderate resistance of about 100Ω and the galvanometer itself has a small current carrying capacity of 1 mA.

## How are the figure of merit and current sensitivity of galvanometer?

Galvanometer deflection is proportional to the amount of current passed through it. Figure of merit of a galvanometer is the reciprocal of current sensitivity.

Is figure of merit same as galvanometer constant?

The restoring torque per unit twist is given as ‘k’ which is a galvanometer constant. Figure of merit is given as ‘K’ which is defined as the deflection produced per unit current.

What is figure of merit of galvanometer Class 12?

Figure of merit is in general is the numerical value representing the degree of effectiveness or efficiency of an instrument approximated by different estimation techniques. The figure of merit of a galvanometer is the current required to produce a deflection of one division in the galvanometer scale.

### What is figure of merit unit?

Figure of merit is the amount of current been passed in the unit of deflection in a galvanometer. Its SI unit is Ampere per division.

### Is figure of merit and current sensitivity same?

With this definition the figure of merit is the reciprocal of the current sensitivity.

What is the significance of figure of merit?

A figure of merit is a quantity used to characterize the performance of a device, system or method, relative to its alternatives. In engineering, figures of merit are often defined for particular materials or devices in order to determine their relative utility for an application.

What is figure of merit in physics class 12?

Figure of merit is in general is the numerical value representing the degree of effectiveness or efficiency of an instrument approximated by different estimation techniques.

#### What are the analytical figures of merit?

Figures of merit are a way for analytical chemists to characterize a method. The six figures of merit we will use are precision, accuracy, sensitivity, linear dynamic range, detection limit, and selectivity.

What is the figure of merit of the galvanometer if current I produce a deflection θ in it?

The figure of merit of the galvanometer is60μA/division. In the absence of shunt resistance, the galvanometer produces a deflection of θ=9divisions when current flows in the circuit. The value of the shunt resistance that can cause the deflection of θ2, is closest to. A.

How can we convert galvanometer into ammeter?

A galvanometer is converted into an ammeter by connecting a low resistance in parallel with the galvanometer. This low resistance is called shunt resistance S. The scale is now calibrated in ampere and the range of ammeter depends on the values of the shunt resistance.